求翻译：The contents of hydroxyl groups and cresol groups in fractionated birch lignocresols were slightly higher than fractionated spruce lignocresols是什么意思？

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The contents of hydroxyl groups and cresol groups in fractionated birch lignocresols were slightly higher than fractionated spruce lignocresols

问题补充：

匿名	2013-05-23 12:21:38 羟基和在分馏桦木lignocresols甲酚组的内容比分馏云杉lignocresols更高略有

匿名	2013-05-23 12:23:18 羟基的内容和甲酚集团在华大天源桦lignocresols是略高於华大天源lignocresols云杉

匿名	2013-05-23 12:24:58 羟基和甲酚小组内容在被分馏的桦树lignocresols被分馏的云杉的lignocresols轻微地高于

匿名	2013-05-23 12:26:38 正在翻译，请等待...

匿名	2013-05-23 12:28:18 null

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